Zhone Technologies 4821-A2 manual LED Meanings, Status

LEDs

LED Meanings

When power is first applied to the unit, it performs a power-on self-test. When this test is successfully completed, the Status LED blinks. The meaning of all the LEDs is shown in Table 3, Front Panel LEDs.

Table 3:	Front Panel LEDs
LED		Color	State	Meaning
Link*		Green	Off	No Ethernet link present.
			On	Ethernet Link present.
			Flashing	Ethernet link is present, but port is
				administratively disabled.
Activity*		Green	Off	No data is being transferred.
			On	Data is being transferred.
STATUS		Green	Off	No power, or the unit has not
				completed initialization.
			On	Unit has power and has completed
				initialization.
ALARM		Amber	Off	No Alarms.
			On	Unit failed self-test, or the unit has
				exceeded a safe temperature, or a fan
				has failed.
TEST		Amber	Off	Normal operating mode.
			On	At least one port is in test mode.
DSL Ports		Green	Off	The port is disabled or no signal is
(LEDs				detected on the line.
numbered			On	Port has successfully trained with the
1–24 or 1–48
				remote and is active.
correspond to
DSL ports
1–24 or 1–48)

*The RJ45-type connectors for Port 1 and Port 2 bear two LEDs: the left one is the Link LED and the right one is the Activity LED.

34 BitStorm 4800 Express Model 4821-A2 Installation Guide 4821-A2-ZN21-30